Retell AI vs Synthflow: who uses which
Customers, public proof and the companies that use both.
On usedby, 32 companies use Retell AI and 14 use Synthflow. No company is listed with both yet.Latest check Oct 5, 2026: 43 of 46 public lines checked. Counts include every proof level, job-post signals included. Companies named on both have a confirmed or observed line on each side.
Who uses Retell AI, Synthflow, or both
Every company with a public proof for at least one of the two tools.
32
use only Retell AI
0
companies use both
14
use only Synthflow
32 companies use only Retell AI, 14 use only Synthflow and 0 use both, out of the 46 companies on usedby that use at least one of them.
Where it lands
Newest customers
We have not started tracking changes for Retell AI yet.
Where it lands
Newest customers
We have not started tracking changes for Synthflow yet.
Who uses both
Companies with a confirmed or observed line on both tools.
Side by side
Facts from our data and from each vendor's public pages. Each line says where it comes from.
Retell AI
SynthflowWhat customers report
Results as the vendor or the customer published them, with the source and the date.
Retell AI
Call handling time reduction in data intake flows: ~3 minutes
Matic
Vendor case study, retellai.com, captured Oct 5, 2026
That’s roughly 200 hours per month we’re getting back
TripleTen
Vendor case study, retellai.com, captured Oct 5, 2026
Synthflow
reducing booking costs by 70%
Smartcat
Vendor case study, synthflow.ai, captured Oct 5, 2026
+80% Faster Data Submission
Peak Demand
Vendor case study, synthflow.ai, captured Oct 5, 2026
Questions about Retell AI and Synthflow
Which is used more, Retell AI or Synthflow?
Retell AI has more customers on usedby: 32 against 14 for Synthflow.
Do companies use both Retell AI and Synthflow?
usedby has not found a company with a confirmed or observed line on both Retell AI and Synthflow yet.
Who uses Retell AI?
32 companies on usedby, each with the public page that shows it. See who uses Retell AI.
Who uses Synthflow?
14 companies on usedby, each with the public page that shows it. See who uses Synthflow.
How does usedby count customers?
A company counts when a public page shows it: a vendor's customer page, a case study, a press release or a job post, most saved with a dated capture. Every line is a customer, at one of three proof levels: confirmed, observed or signal (a job post, the weakest). A company is named as using both tools when its lines on both are confirmed or observed.